EP2103743A1 - Gründung einer Windturbine - Google Patents

Gründung einer Windturbine Download PDF

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Publication number
EP2103743A1
EP2103743A1 EP09003736A EP09003736A EP2103743A1 EP 2103743 A1 EP2103743 A1 EP 2103743A1 EP 09003736 A EP09003736 A EP 09003736A EP 09003736 A EP09003736 A EP 09003736A EP 2103743 A1 EP2103743 A1 EP 2103743A1
Authority
EP
European Patent Office
Prior art keywords
wind turbine
foundation
cone
accordance
turbine foundation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09003736A
Other languages
English (en)
French (fr)
Inventor
Carlos Gamesa Leon Perfecto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Gamesa Renewable Energy Innovation and Technology SL
Original Assignee
Gamesa Innovation and Technology SL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gamesa Innovation and Technology SL filed Critical Gamesa Innovation and Technology SL
Publication of EP2103743A1 publication Critical patent/EP2103743A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys

Definitions

  • This invention relates in general terms to a wind turbine foundation in the shape of a cone, and more particularly a foundation which comprises a central body in the shape of a truncated cone over which is found an upper flange or a pedestal for connecting with the tower and a lower slab in the shape of a flat ring.
  • the power generated in a wind turbine is proportional to the size of the rotor. Therefore, to generate more power, the size of the blades is increased, and as a consequence there is an increase in the size of the power train, of the turbine and the height of the tower. It follows that there must also be an increase in dimensions of the foundation upon which the wind turbine is supported, up to the point where a reduction in the material used in the foundation leads to a considerable reduction in the cost of the wind turbine unit. To this end the above technique offers a number of foundation options to meet ever more challenging requirements and in turn reduce the material used and/or facilitate installation:
  • the aim of this invention is to provide a wind turbine foundation with a central body in the shape of a truncated cone which is formed in concrete oven the earth of the terrain, and which has a lower slab in the shape of a plane ring.
  • Another aim of an alternative embodiment of this invention is to have a wind turbine foundation with a central body in the shape of a truncated cone whose interior houses the electrical installations of the wind turbine or other components of the latter, and which has a lower slab in the shape of a plane ring.
  • an alternative embodiment of this invention is a wind turbine foundation with a central body in the shape of a truncated cone which has a lower slab in the shape of a plane ring which sits directly on the surface of a terrain with great load-bearing capacity, without needing to bury the central body, in whose interior there can also be housed a series of wind turbine components.
  • One of the advantages of the preferred embodiment of this invention is the optimisation of the total foundation cost for wind turbines rated at 2MW and above in comparison with the state of the art, due principally to the saving in materials (concrete, reinforcing steel) relative to conventional foundation designs; the reduction in the volume of excavation, which reduces the cost of excavation in addition to achieving a significant reduction in cost of transport to the waste dump (economical and environmentally friendly solution); and the reduction and simplification of the formwork since the local earth itself is used, rather than evacuated from the central body, as permanent formwork during the forming in situ of the foundation concrete.
  • the following table sets out an estimate of the progression of the total cost and cost / kW of the hollow cone foundation for various power ranges. It illustrates a clear reduction in the cost of foundation with the wind turbines of the order of 2-10MW compared with the conventional alternatives mentioned above: Power (MW) Total Cost ( €) Cost ( €/KW) 0.86 32,693 38.5 2 60,431 30.2 4 131,342 32.8 6 171,137 28.5 8 268,544 33.6 10 457,214 45.7
  • Another advantage of this invention is the increase in stability due to the inertia provided by the diameter of the base of the cone, compared with the corresponding stability provided by state of the art foundations having the same mass. Further it improves the capacity to absorb wind turbine loads since the flow of stresses is dispersed throughout the length of the walls of the cone as they travel downwards through the foundation in a smooth and uniform manner, independently of the orientation of the nacelle and the directions of the above-mentioned loads: As the nacelle changes its orientation to match the direction of the wind in order to optimise the production of energy, the direction of the forces changes with the rotation of the nacelle.
  • Another advantage of this invention is the greater structural efficiency at 80000KNm and above at the base of the tower. That is a better relationship between the diameter, the material and the geometry or the structurall configuration, in comparison with the state of the art as currently published.
  • Another advantage of an alternative embodiment is the saving in the excavation itself for those terrains whose capacity for support and properties are such that it is not necessary to bury the conical foundation considered in this invention so that it can be used as a base for the tower without the need for additional foundation.
  • Both this solution and the alternative embodiment, where the foundation is buried evacuating the earth from the interior of the cone, enable the foundation to be implemented in a modular fashion with prefabricated pieces which facilitate transport and assembly. Once installed, the above-mentioned space can be used to house the wind turbine's electrical installations or other components thereby optimising the interior space in the tower and nacelle.
  • the conical foundation is based on a conical shape with a lower slab (2) which receives the stresses from the walls of the cone (1) and transmits them to the ground.
  • a pedestal which is not shown can be used to connect the foundation to the tower, at the upper part of the cone, or a concentric ring in the form of a flange to allow access to the hollow interior of the foundation in the case of other embodiments.
  • inertia is supplied by the radius of the cone at its base, and the transfer of stresses from the lower part of the tower to the supporting ground can be achieved smoothly, on being transmitted by the conical surface.
  • the main new feature and advance under the preferred embodiment of this invention lies within the design of a conical foundation which takes advantage moreover of the earth which is not extracted for use as permanent formwork while the concrete is poured in situ. This fact allows the design of the foundation to be optimised, reducing the quantity of material used and lowering the cost of foundations, in addition to the advantages referred to in the preceding section.
  • the foundation is made up of a plane ring (2) for the base and a truncated cone shaped body in the central part (1) which is formed in concrete on the unexcavated terrain.
  • the cross section of the plane ring (2) is preferably rectangular, but additionally the upper and/or lower side could have a slight slope between 0 and 45° relative to the horizontal.
  • the dimensions of the above-mentioned ring can have, depending on the load and dimensions of the wind turbine, a radius (R) of up to 18m, a thickness (L) of up to 6m, and a height (c) of up to 1m.
  • the lower ring (2) is joined to the central conical body (1) in the interior area of the ring (2) so as not to leave a projection into the interior, with the aim of facilitating excavation work, formwork and the pouring of concrete.
  • the section of the conical body (1) of the preferred embodiment is produced via a generatrix in the form of a rhomboid with the two short sides parallel to the horizontal at its upper and lower extremes and the two long sides parallel at an inclination falling preferably between 20 and 60° with respect to the horizontal.
  • the thickness (e) defined by the distance between the above-mentioned long sides of the generatrix is preferably constant and depending on requirements reaches values up to 1.4m.
  • the thickness of the cone can increase (1) as we approach the lower ring (2).
  • additionally the above-mentioned long sides of the generatrix are formed from complex curves with a large radius of curvature, which produces a foundation in the shape of a cone with pseudo-spherical walls.
  • the total height of the foundation (H) reaches values up to 6m
  • the diameter (Dp) of the upper mouth of the central body reaches dimensions up to 15m in diameter depending on the diameter of the tower and the load from the wind turbine.
  • the dimensions of the foundation will vary depending on the load bearing capacity of the earth and also on the load from the wind turbine. However, by way of example, for a wind turbine of the order of 2 to 4MW the ranges of the principal dimensions are:
  • the conical foundation design is intended to be executed in situ with conventional concrete having characteristic strength between 25 and 35MPa.
  • this design can be carried out using high-strength concrete, special concrete, fibre reinforced concrete.
  • Another alternative is provided by prefabricated concrete components with different qualities of concrete for the different components (conical surface, lower slab, etc.).
  • the excavation must be carried out taking account of the final volume of the conical foundation. Once the excavation is carried out, a layer of mud slab is placed on the ground, and upon that the previously pre-mounted reinforcements, for subsequent pouring of concrete. Depending on the slope of the conical surface, it may be necessary to use formwork.
  • the concrete pouring for the conical surface (1) requires the use of interior formwork, which must be suitably underpinned and held together, either that or make use of prefabricated components for ease of transport and assembly as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Wind Motors (AREA)
  • Foundations (AREA)
EP09003736A 2008-03-18 2009-03-16 Gründung einer Windturbine Withdrawn EP2103743A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200800777A ES2347742A1 (es) 2008-03-18 2008-03-18 Cimentacion de aerogenerador.

Publications (1)

Publication Number Publication Date
EP2103743A1 true EP2103743A1 (de) 2009-09-23

Family

ID=40473929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09003736A Withdrawn EP2103743A1 (de) 2008-03-18 2009-03-16 Gründung einer Windturbine

Country Status (4)

Country Link
US (1) US20090255200A1 (de)
EP (1) EP2103743A1 (de)
CN (1) CN101539096A (de)
ES (1) ES2347742A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109543287A (zh) * 2018-11-20 2019-03-29 深能南京能源控股有限公司 基于遗传算法的风电机组基础尺寸优化方法
WO2019191788A1 (en) * 2018-03-26 2019-10-03 Viet Hung Nguyen A foundation of a wind turbine tower
WO2024032921A1 (de) 2022-08-11 2024-02-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Windkraftanlage sowie verfahren zum errichten einer windkraftanlage

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145414B4 (de) * 2001-09-14 2013-09-12 Aloys Wobben Verfahren zur Errichtung einer Windenergieanlage, Windenergieanlage
WO2004067959A1 (de) * 2003-02-01 2004-08-12 Aloys Wobben Verfahren zur errichtung einer windenergieanlage sowie windenergieanlage
US20100024311A1 (en) * 2008-07-30 2010-02-04 Dustin Jon Wambeke Wind turbine assembly with tower mount
EP2375057B1 (de) * 2010-03-31 2016-05-04 Siemens Aktiengesellschaft Windturbinenanlage
DE102010047773B4 (de) * 2010-10-08 2012-08-09 Timber Tower Gmbh Fundament für eine Windkraftanlage
CN102409697A (zh) * 2011-09-15 2012-04-11 江苏九鼎环球建设科技集团有限公司 预制装配式塔桅结构基础
PT2886723T (pt) 2012-06-06 2017-06-08 Gestamp Hybrid Towers S L Fundação nervurada para superestruturas e método para produção da fundação
CN109372006B (zh) * 2018-11-27 2023-11-10 中国电建集团华东勘测设计研究院有限公司 海上风机基础防冲刷保护结构及其施工方法
ES2701605A1 (es) 2018-12-03 2019-02-25 Hws Concrete Towers S L Cimentacion para torres eolicas
ES1293394Y (es) * 2022-03-30 2022-10-21 Ms Techno Rditech Sl Sistema de cimentacion laminar de hormigon para torres eolicas

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665915A1 (fr) * 1990-08-16 1992-02-21 Petroles Cie Techniques Procede d'ancrage dans le sol d'une structure metallique et base d'ancarge d'une structure metallique ainsi mise en place.
CA2168480A1 (en) * 1996-01-31 1997-08-01 M. T. Croghan Concrete post base mold
US5800727A (en) * 1995-12-07 1998-09-01 Croghan; Morris T. Base mold for concrete post
EP1074663A1 (de) 1999-08-06 2001-02-07 Carl Bro as Fundament für Gebäude, insbesondere Fundament für einen Turm, Windenergieanlage oder dergleichen
DK200100030U3 (da) 2001-01-31 2001-03-23 Peter Thisted Stjernefundament med elementer til fundering af tårne
US6672023B2 (en) 2000-09-27 2004-01-06 Allan P. Henderson Perimeter weighted foundation for wind turbines and the like
WO2004053238A1 (en) * 2002-12-11 2004-06-24 Bigfoot Systems Inc. Footing form
WO2004101898A2 (de) 2003-05-13 2004-11-25 Aloys Wobben Fundament für eine windenergieanlage
NL1024581C2 (nl) 2003-10-21 2005-04-22 Gmb Beton En Ind Noord West B Windmolenfundatie.
DE102006002780A1 (de) * 2006-01-20 2007-07-26 Tiefbau-Gmbh "Unterweser" Verfahren zum Herstellen eines Wasserbauwerks

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432800A1 (de) * 1994-08-31 1996-03-07 Hochtief Ag Hoch Tiefbauten Windkraftanlage
CN2379522Y (zh) * 1999-05-25 2000-05-24 赵正义 组合式塔机基础砼预制构件防位移联接装置
RU2226620C2 (ru) * 2002-05-27 2004-04-10 Бирюлин Игорь Борисович Ветровой теплоэлектрический генератор
JP4645300B2 (ja) * 2005-05-19 2011-03-09 鹿島建設株式会社 洋上風力発電装置の重力式基礎
US8051627B2 (en) * 2006-04-30 2011-11-08 General Electric Company Tower adapter, method of producing a tower foundation and tower foundation

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2665915A1 (fr) * 1990-08-16 1992-02-21 Petroles Cie Techniques Procede d'ancrage dans le sol d'une structure metallique et base d'ancarge d'une structure metallique ainsi mise en place.
US5800727A (en) * 1995-12-07 1998-09-01 Croghan; Morris T. Base mold for concrete post
CA2168480A1 (en) * 1996-01-31 1997-08-01 M. T. Croghan Concrete post base mold
EP1074663A1 (de) 1999-08-06 2001-02-07 Carl Bro as Fundament für Gebäude, insbesondere Fundament für einen Turm, Windenergieanlage oder dergleichen
US6672023B2 (en) 2000-09-27 2004-01-06 Allan P. Henderson Perimeter weighted foundation for wind turbines and the like
DK200100030U3 (da) 2001-01-31 2001-03-23 Peter Thisted Stjernefundament med elementer til fundering af tårne
WO2004053238A1 (en) * 2002-12-11 2004-06-24 Bigfoot Systems Inc. Footing form
WO2004101898A2 (de) 2003-05-13 2004-11-25 Aloys Wobben Fundament für eine windenergieanlage
NL1024581C2 (nl) 2003-10-21 2005-04-22 Gmb Beton En Ind Noord West B Windmolenfundatie.
DE102006002780A1 (de) * 2006-01-20 2007-07-26 Tiefbau-Gmbh "Unterweser" Verfahren zum Herstellen eines Wasserbauwerks

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019191788A1 (en) * 2018-03-26 2019-10-03 Viet Hung Nguyen A foundation of a wind turbine tower
CN109543287A (zh) * 2018-11-20 2019-03-29 深能南京能源控股有限公司 基于遗传算法的风电机组基础尺寸优化方法
WO2024032921A1 (de) 2022-08-11 2024-02-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Windkraftanlage sowie verfahren zum errichten einer windkraftanlage
DE102022120299A1 (de) 2022-08-11 2024-02-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Windkraftanlage sowie Verfahren zum Errichten einer Windkraftanlage

Also Published As

Publication number Publication date
ES2347742A1 (es) 2010-11-03
CN101539096A (zh) 2009-09-23
US20090255200A1 (en) 2009-10-15

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